CN210714891U - High-pressure common rail pump multipath oil return device and fuel oil consumption device comprising same - Google Patents
High-pressure common rail pump multipath oil return device and fuel oil consumption device comprising same Download PDFInfo
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- CN210714891U CN210714891U CN201921063580.3U CN201921063580U CN210714891U CN 210714891 U CN210714891 U CN 210714891U CN 201921063580 U CN201921063580 U CN 201921063580U CN 210714891 U CN210714891 U CN 210714891U
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Abstract
The utility model discloses a high pressure common rail pump multichannel oil return device and contain the fuel device of consumption of this device belongs to mechanical technical field. The utility model discloses a high pressure common rail pump multichannel oil return device is provided with pressure measurement and pressure control valve simultaneously, forms the closed circuit between pressure measurement and the pressure control valve, adjusts common rail intraductal pressure jointly for common rail intraductal pressure keeps invariable, and then makes high pressure common rail pump multichannel oil return device can the steady operation. The utility model discloses a high pressure common rail pump multichannel oil returning device has all set up the common rail pipe, pressure control valve, temperature-detecting device and the flow detection device that contain relief valve and pressure detection device alone on each oil circuit that a plurality of oil-outs of high-pressure oil pump link to each other with the oil tank, pressure, flow and the temperature of a plurality of oil-outs of measurement high-pressure oil pump that can be effective and reliable for high pressure common rail pump multichannel oil returning device's precision is higher.
Description
Technical Field
The utility model relates to a high pressure common rail pump multichannel oil return device and contain the fuel-consuming device of this device belongs to mechanical technical field.
Background
The high-pressure common rail system is an oil supply system for a diesel engine and comprises two functions of oil outlet and oil return. The high-pressure fuel oil is conveyed from the oil tank to the common rail pipe through the high-pressure oil pump, and then is conveyed to the oil injector through the common rail pipe to realize injection.
The oil return function is realized by a closed system formed by an oil tank, a high-pressure oil pump, a common rail pipe, a real-time pressure sensor and a control unit, in the system, high-pressure fuel oil is conveyed from the oil tank to the common rail pipe through the high-pressure oil pump, then the pressure in the common rail pipe is measured through the real-time pressure sensor, and after certain pressure is reached, the control unit can enable the common rail pipe to flow into the oil tank again.
Although high pressure common rail systems have been developed for many years both at home and abroad, the existing high pressure common rail systems still have obvious defects, such as:
firstly, the existing high-pressure common rail system only detects the rail pressure in the common rail pipe by arranging a real-time pressure sensor in the common rail pipe, but actually, as the fuel oil in the common rail pipe flows back to an oil tank, the pressure in the common rail pipe is difficult to keep constant, so that the running stability of the high-pressure common rail system is greatly reduced;
secondly, generally, a high-pressure oil pump of the high-pressure common rail system has a plurality of oil outlets, and the flow, temperature and other performances of each oil outlet of the high-pressure oil pump are different, but the existing high-pressure common rail system only performs performance detection on the high-pressure oil pump through an integrated terminal connected with the oil tank at the oil outlet of the high-pressure oil pump, so that the tested data is unreal and unreliable, and the operation precision of the high-pressure common rail system is greatly reduced.
Therefore, it is urgently needed to design a high-pressure common rail system with strong stability and high precision to solve the defects of the existing high-pressure common rail system.
SUMMERY OF THE UTILITY MODEL
[ problem ] to
The to-be-solved technical problem of the utility model is to provide a high pressure common rail pump multichannel oil return device that stability is strong, precision is high.
[ solution ]
In order to solve the problems, the utility model provides a high-pressure common rail pump multipath oil return device, which comprises a motor, an oil pump and an oil tank; an oil outlet of the oil pump is connected with the oil tank through a plurality of first oil ways; an oil inlet of the oil pump is connected with the oil tank through a second oil path; the end where the oil pump is located is taken as the right, and a common rail pipe, a pressure control valve, a filter, a temperature detection device and a flow detection device are sequentially arranged on the first oil way from right to left; and the common rail pipe is provided with a safety valve and a pressure detection device.
In an embodiment of the present invention, the motor is a variable frequency motor.
In an embodiment of the present invention, the oil pump is a high-pressure oil pump.
In an embodiment of the present invention, the temperature detecting device is a temperature sensor.
In an embodiment of the present invention, the flow detecting device is a flow meter.
In an embodiment of the present invention, the pressure detecting device is a rail pressure sensor.
In an embodiment of the present invention, the device comprises a coupling.
In an embodiment of the present invention, the coupling is located between the motor and the oil pump.
In an embodiment of the present invention, the coupling is an elastic coupling.
In an embodiment of the present invention, the number of the first oil passages is four.
In one embodiment of the present invention, the apparatus comprises a controller.
In an embodiment of the present invention, the controller is configured to receive a signal from the pressure detecting device and send a signal to the pressure control valve.
In an embodiment of the present invention, the controller is a Programmable Logic Controller (PLC).
The utility model also provides a device, the device is just for consuming the fuel device the device contains above-mentioned high pressure common rail pump multichannel oil return device.
In one embodiment of the present invention, the device is an automobile, a ship, or an airplane.
[ advantageous effects ]
(1) The utility model discloses a high pressure common rail pump multichannel oil return device is provided with pressure measurement and pressure control valve simultaneously, forms the closed circuit between pressure measurement and the pressure control valve, adjusts common rail intraductal pressure jointly for common rail intraductal pressure keeps invariable, and then makes high pressure common rail pump multichannel oil return device can the steady operation;
(2) the utility model discloses a high pressure common rail pump multichannel oil return device has all set up the common rail pipe, pressure control valve, temperature-detecting device and the flow detection device that contain relief valve and pressure detection device alone on each oil circuit that a plurality of oil-outs of high pressure oil pump link to each other with the oil tank, can be effective reliable measure pressure, flow and the temperature of a plurality of oil-outs of high pressure oil pump for the precision of high pressure common rail pump multichannel oil return device is higher;
(3) the utility model discloses a high pressure common rail pump multichannel oil returning device is provided with the filter, can effectively filter the fuel of backward flow to the oil tank, guarantees this part then can not cause high pressure common rail pump multichannel oil returning device's jam, thereby guarantees the utility model discloses a high pressure common rail pump multichannel oil returning device can move smoothly.
Drawings
Fig. 1 is the utility model discloses high pressure common rail pump multichannel oil return device's overall structure schematic diagram.
Wherein, 1 is a motor, 2 is an oil pump, 3 is an oil tank, 4 is an oil outlet, 5 is a first oil path, 6 is an oil inlet, 7 is a second oil path, 8 is a common rail pipe, 9 is a pressure control valve, 10 is a filter, 11 is a temperature detection device, 12 is a flow detection device, 13 is a safety valve, 14 is a pressure detection device, 15 is a coupler and 16 is a controller.
Detailed Description
To achieve the above objects, features and advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the multi-path oil return device of the high-pressure common rail pump of the present invention comprises a motor 1, an oil pump 2 and an oil tank 3; an oil outlet 4 of the oil pump 2 is connected with the oil tank 3 through a plurality of first oil ways 5; an oil inlet 6 of the oil pump 2 is connected with the oil tank 3 through a second oil path 7; the end where the oil pump 2 is located is the right, and a common rail pipe 8, a pressure control valve 9, a filter 10, a temperature detection device 11 and a flow detection device 12 are sequentially arranged on the first oil path 5 from right to left; the common rail pipe 7 is provided with a safety valve 13 and a pressure detection device 14.
Preferably, the motor 1 is a variable frequency motor.
Preferably, the oil pump 2 is a high-pressure oil pump.
Preferably, the temperature detection device 11 is a temperature sensor.
Preferably, the flow rate detecting device 12 is a flow meter.
Preferably, the pressure detecting device 14 is a rail pressure sensor.
Preferably, the device comprises a coupling 15.
Preferably, the coupling 15 is located between the motor and the oil pump 2 1.
Preferably, the coupling 15 is an elastic coupling.
Preferably, the number of the first oil passages 5 is four.
Preferably, the device includes a controller 16.
Preferably, the controller 16 is configured to receive signals from the pressure sensing device and send signals to the pressure control valve.
Preferably, the controller 16 is a Programmable Logic Controller (PLC).
The utility model discloses high pressure common rail pump multichannel oil returning device's work flow as follows:
starting the motor 1; the motor 1 drives the oil pump 2 to start through the coupler 15, so that a negative pressure is formed in the inner cavity of the oil pump 2, and fuel oil is sucked out of the oil tank 3 through the second oil path 7; the sucked fuel reaches the common rail pipe 8 through the first oil passage 5, and when the pressure in the common rail pipe 8 reaches the threshold value of the relief valve 13, the relief valve 13 is automatically opened, so that the fuel flows back to the fuel tank 3 through the first oil passage 5.
In the process that the fuel oil flows back to the oil tank 3 through the first oil way 5, a closed circuit is formed between the pressure detection device 14 on the common rail pipe and the pressure control valve 9 on the first oil way 5, the pressure detection device 14 can convert a detected pressure signal into an electric signal and feed the electric signal back to the controller 16, and the controller 16 can control the pressure control valve 9, so that the pressure detection device 14 and the pressure control valve 9 can jointly adjust the pressure in the common rail pipe, and further the pressure in the common rail pipe is kept constant; the temperature detection device 11 and the flow rate detection device 12 detect the temperature and the flow rate of the fuel that flows back from the first oil passage 5 to the fuel tank 3; the filter 10 filters the fuel that returns from the first oil passage 5 to the tank 3.
The protection scope of the present invention is not limited to the above embodiments, and any modifications, equivalent replacements, and improvements that can be made by a person skilled in the art within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high-pressure common rail pump multipath oil return device is characterized in that the device comprises a motor, an oil pump and an oil tank; an oil outlet of the oil pump is connected with the oil tank through a plurality of first oil ways; an oil inlet of the oil pump is connected with the oil tank through a second oil path; the end where the oil pump is located is taken as the right, and a common rail pipe, a pressure control valve, a filter, a temperature detection device and a flow detection device are sequentially arranged on the first oil way from right to left; and the common rail pipe is provided with a safety valve and a pressure detection device.
2. The high-pressure common rail pump multi-way oil return device as claimed in claim 1, wherein the motor is a variable frequency motor.
3. The high-pressure common rail pump multi-path oil return device as claimed in claim 1, wherein the oil pump is a high-pressure oil pump.
4. A high-pressure common rail pump multi-way oil return device according to any one of claims 1 to 3, wherein the temperature detection device is a temperature sensor.
5. A high-pressure common rail pump multiple oil return device according to any one of claims 1 to 3, wherein the flow rate detection device is a flow meter.
6. A high-pressure common rail pump multi-way oil return device according to any one of claims 1 to 3, wherein the pressure detection device is a rail pressure sensor.
7. A high pressure common rail pump multiple oil return device according to any one of claims 1 to 3, wherein the device comprises a coupling.
8. The high-pressure common rail pump multi-way oil return device as claimed in claim 7, wherein the coupler is located between the motor and the oil pump.
9. The high-pressure common rail pump multi-path oil return device as claimed in claim 7, wherein the coupling is an elastic coupling.
10. An apparatus, characterized in that the apparatus is a fuel consuming apparatus and the apparatus comprises a high pressure common rail pump multiple oil return apparatus according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921063580.3U CN210714891U (en) | 2019-07-09 | 2019-07-09 | High-pressure common rail pump multipath oil return device and fuel oil consumption device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921063580.3U CN210714891U (en) | 2019-07-09 | 2019-07-09 | High-pressure common rail pump multipath oil return device and fuel oil consumption device comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210714891U true CN210714891U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921063580.3U Active CN210714891U (en) | 2019-07-09 | 2019-07-09 | High-pressure common rail pump multipath oil return device and fuel oil consumption device comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210714891U (en) |
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2019
- 2019-07-09 CN CN201921063580.3U patent/CN210714891U/en active Active
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